Robust Synthesis Method for Secure Directional Modulation With Imperfect Direction Angle

Hu, Jinsong; Shu, Feng; Li, Jun

doi:10.1109/lcomm.2016.2550022

Cited by 140 publications

(151 citation statements)

References 6 publications

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“…The artificial noise vector u should lie in the null space of a(θ n ) (i.e., a * (θ n )u = 0) in order to avoid interference to the desired receiver. Therefore, the artificial noise vector u is given as [20] …”

Section: Fda Butler Matrix With Artificial Noisementioning

confidence: 99%

Frequency Diverse Array Using Butler Matrix for Secure Wireless Communications.

Nusenu¹,

Chen²,

Wang³

et al. 2018

PIER M

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Abstract-An antenna array system configured to offer directional dependent modulation has the capability to prevent eavesdroppers' attacks, thereby enhancing the security level of data transmission. In this paper, we propose artificial-noise-aided directional modulation transmitter utilizing a 4 × 4 Butler matrix with a four-element 2-D (i.e., range and angle) frequency diverse array (FDA) antenna to achieve secure transmissions, which outperforms the 1-D (i.e., angle) phased array scheme. The proposed scheme utilizes FDA Butler matrix excited by information data and injected artificial noise interference which radiates along all directions except the main information data direction. Thus, the radiation pattern during a particular transmission period will be range-angle dependent. The proposed scheme is evaluated by using constellation points in IQ space, bit error probability (BER), and secrecy capacity. Simulation results demonstrate that: 1) our scheme scrambles the constellation points along undesired direction(s) in both amplitude and phase, while preserving a clear constellation points along the pre-specified direction(s); 2) the scheme achieves better BER and secrecy capacity than that of the phased array based directional modulation scheme and other existing scheme; 3) the scheme significantly improves security performance especially in the range dimension.

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Section: Fda Butler Matrix With Artificial Noisementioning

confidence: 99%

Frequency Diverse Array Using Butler Matrix for Secure Wireless Communications.

Nusenu¹,

Chen²,

Wang³

et al. 2018

PIER M

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show abstract

“…By linking the solutions in (18) to the |Pinfo(α)/Pinter(α)| curves in Fig. 5 four critical points can be identified,…”

Section: Validation With Multiple Legitimate Receivers In Free Spacementioning

confidence: 99%

“…A variety of DM synthesis methods by constraining different properties of array far-field radiation patterns were described in [13]- [17]. An orthogonal vector approach was firstly proposed in [1] and further refined in [18], which synthesizes DM transmitter arrays by generating orthogonal vectors/interference in the null space of the channel vectors between the DM transmitters and the legitimate receivers. This approach is relatively universal as it is compatible with both static and dynamic DM systems [19], and can be readily deployed into modern digital wireless transmitters [20].…”

Section: Introductionmentioning

confidence: 99%

A Synthesis-Free Directional Modulation Transmitter Using Retrodirective Array

Ding

Fusco

2017

IEEE J. Sel. Top. Signal Process.

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Abstract-By modification of the classical retrodirective arrays (RDAs) architecture a directional modulation (DM) transmitter can be realized without the need for synthesis. Importantly, through analytical analysis and exemplar simulations, it is proved that, besides the conventional DM application scenario, i.e., secure transmission to one legitimate receiver located along one spatial direction in free space, the proposed synthesis-free DM transmitter should also perform well for systems where there are more than one legitimate receivers positioned along different directions in free space, and where one or more legitimate receivers exist in a multipath environment. None of these have ever been achieved before using synthesis-free DM arrangements.Index Terms-Directional modulation (DM), information pattern, interference pattern, retrodirective array (RDA), synthesis-free.

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“…Seeking DM synthesis approaches for the excitation reconfigurable DM transmitter architecture is the most active area in DM research recently. Among all synthesis approaches, the orthogonal vector method developed in [6,24], which shares a similar idea with the artificial noise concept [25,26] studied in the information theory community, was found to furnish a fundamental and universal DM synthesis strategy. It also provides the key to understand the synthesis-free DM architecture.…”

Section: Synthesis Approaches For Dm Transmittersmentioning

confidence: 99%

“…With the help of the orthogonal vector concept, a generalised DM synthesis approach was developed in [6] and further refined in [27]. The synthesised DM transmitter array excitation vector S ov takes the form…”

Section: Orthogonal Vector Approach For Dm Synthesismentioning

confidence: 99%